Replication of Leuchter's findings

7.90 Irving contended that the results of the chemical test conducted on behalf of Leuchter had been replicated by amongst others Gelmar Rudolf, a chemist at the Max Planck Institute. Van Pelt knew little of his report but agreed that Rudolf's findings broadly corresponded with those of Leuchter. Irving produced a letter from the Institute for Historical Review which claimed that others had arrived at similar conclusions. He also claimed (and van Pelt accepted) that in about 1989 the Auschwitz authorities carried out tests which also found high cyanide traces in the delousing chambers and much lower quantities in crematoria 2 and 3. The results of these tests were not published. Subsequently further tests were conducted and the results were published in the so-called Markievicz report (the conclusions of which I have already summarised).